'What Ethereum's Move To Proof Of Stake Means' cc: unblock256 glazec tatum_io blockchain crypto
. Tendermint can keep the network stable in the condition that among 3k+1 nodes, there are k byzantine nodes.Modern BFT algorithms employ multi-round votes to ensure every node knows that more than 2/3 of nodes approve the proposal. After the block is finalized, the honest node will never revert it.
Execution delay. Nodes first decide the new blocks. Then nodes execute all transactions in the new block. Although individual transactions work fine, executing all transactions once may cause problems, like the double-spending problemCompared to BFT algorithms, Ouroboros can support more and more nodes and it also supports nodes to come in and out at anytime. Ouroboros is more decentralized and flexible than BFT but has a longer finality time. Cardano and Mina uses Ouroboros.
When there is a fork, Ouroboros will choose the correct chain with predefined selection rules. For example, it may choose the most “dense” chain.Blockchains are balancing decentralization and performance. Switching from PoW to PoS shows that blockchains are chasingWe will see more innovations around these four characteristics.ZK can be applied to it.
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